Year	% of GDP
1960	104.42973756128534
1961	107.08544430494406
1962	114.72000705593585
1963	110.10423575576287
1964	114.45557275841519
1965	103.48670418264952
1966	107.61531940818104
1967	108.60248301410367
1968	106.62597656249999
1969	107.66140676142899
1970	97.54920814082115
1971	101.75470051878204
1972	97.56949039364808
1973	118.41585714023617
1974	100.06904112460258
1975	107.44080098374526
1976	105.4435883852139
1977	138.95495627906976
1978	130.360858617737
1979	151.44127180856984
1980	155.57926486361802
1981	143.51650634747915
1982	142.0527915908076
1983	148.75171752113638
1984	146.65317663084508
1985	113.06737248252949
1986	124.26499705003324
1987	123.40231921253715
1988	115.8773213415959
1989	126.88026737476348
1990	113.78077977904898